Write a PL/SQL program for a trigger

PL/SQL program for tracking operation on a emp table.
Create or Replace Trigger EmpTracking
Before Insert or Delete or Update on Emp
For each row
Declare
Begin
          If Inserting then
               /*Can perform operations just before record is inserted into the emp table*/
          Else if Updating then
              /*Can perform operations just before record is about to be updated*/
          Else if Deleting then
               /*Can perform operations just before record is about to be deleted*/
           End If
End EmpTracking

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